Class: Parser::Diagnostic

Inherits:
Object
  • Object
show all
Defined in:
lib/parser/diagnostic.rb

Defined Under Namespace

Classes: Engine

Constant Summary collapse

LEVELS =

Collection of the available diagnostic levels.

Returns:

  • (Array) 
[:note, :warning, :error, :fatal].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(level, reason, arguments, location, highlights = []) ⇒ Diagnostic

Returns a new instance of Diagnostic.

Parameters:



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# File 'lib/parser/diagnostic.rb', line 49

def initialize(level, reason, arguments, location, highlights=[])
  unless LEVELS.include?(level)
    raise ArgumentError,
          "Diagnostic#level must be one of #{LEVELS.join(', ')}; " \
          "#{level.inspect} provided."
  end
  raise 'Expected a location' unless location

  @level       = level
  @reason      = reason
  @arguments   = (arguments || {}).dup.freeze
  @location    = location
  @highlights  = highlights.dup.freeze

  freeze
end

Instance Attribute Details

#arguments ⇒ Symbol (readonly)

Returns extended arguments that describe the error.

Returns:

  • (Symbol) —

    extended arguments that describe the error

See Also:



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# File 'lib/parser/diagnostic.rb', line 31

class Diagnostic
  ##
  # Collection of the available diagnostic levels.
  #
  # @return [Array]
  #
  LEVELS = [:note, :warning, :error, :fatal].freeze

  attr_reader :level, :reason, :arguments
  attr_reader :location, :highlights

  ##
  # @param [Symbol] level
  # @param [Symbol] reason
  # @param [Hash] arguments
  # @param [Parser::Source::Range] location
  # @param [Array<Parser::Source::Range>] highlights
  #
  def initialize(level, reason, arguments, location, highlights=[])
    unless LEVELS.include?(level)
      raise ArgumentError,
            "Diagnostic#level must be one of #{LEVELS.join(', ')}; " \
            "#{level.inspect} provided."
    end
    raise 'Expected a location' unless location

    @level       = level
    @reason      = reason
    @arguments   = (arguments || {}).dup.freeze
    @location    = location
    @highlights  = highlights.dup.freeze

    freeze
  end

  ##
  # @return [String] the rendered message.
  #
  def message
    Messages.compile(@reason, @arguments)
  end

  ##
  # Renders the diagnostic message as a clang-like diagnostic.
  #
  # @example
  #  diagnostic.render # =>
  #  # [
  #  #   "(fragment:0):1:5: error: unexpected token $end",
  #  #   "foo +",
  #  #   "    ^"
  #  # ]
  #
  # @return [Array<String>]
  #
  def render
    if @location.line == @location.last_line || @location.is?("\n")
      ["#{@location}: #{@level}: #{message}"] + render_line(@location)
    else
      # multi-line diagnostic
      first_line = first_line_only(@location)
      last_line  = last_line_only(@location)
      num_lines  = (@location.last_line - @location.line) + 1
      buffer     = @location.source_buffer

      last_lineno, last_column = buffer.decompose_position(@location.end_pos)
      ["#{@location}-#{last_lineno}:#{last_column}: #{@level}: #{message}"] +
        render_line(first_line, num_lines > 2, false) +
        render_line(last_line, false, true)
    end
  end

  private

  ##
  # Renders one source line in clang diagnostic style, with highlights.
  #
  # @return [Array<String>]
  #
  def render_line(range, ellipsis=false, range_end=false)
    source_line    = range.source_line
    highlight_line = ' ' * source_line.length

    @highlights.each do |highlight|
     line_range = range.source_buffer.line_range(range.line)
      if highlight = highlight.intersect(line_range)
        highlight_line[highlight.column_range] = '~' * highlight.size
      end
    end

    if range.is?("\n")
      highlight_line += "^"
    else
      if !range_end && range.size >= 1
        highlight_line[range.column_range] = '^' + '~' * (range.size - 1)
      else
        highlight_line[range.column_range] = '~' * range.size
      end
    end

    highlight_line += '...' if ellipsis

    [source_line, highlight_line].
      map { |line| "#{range.source_buffer.name}:#{range.line}: #{line}" }
  end

  ##
  # If necessary, shrink a `Range` so as to include only the first line.
  #
  # @return [Parser::Source::Range]
  #
  def first_line_only(range)
    if range.line != range.last_line
      range.resize(range.source =~ /\n/)
    else
      range
    end
  end

  ##
  # If necessary, shrink a `Range` so as to include only the last line.
  #
  # @return [Parser::Source::Range]
  #
  def last_line_only(range)
    if range.line != range.last_line
      range.adjust(begin_pos: range.source =~ /[^\n]*\z/)
    else
      range
    end
  end
end

#highlights ⇒ Array<Parser::Source::Range> (readonly)

Supplementary error-related source ranges.

Returns:



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# File 'lib/parser/diagnostic.rb', line 31

class Diagnostic
  ##
  # Collection of the available diagnostic levels.
  #
  # @return [Array]
  #
  LEVELS = [:note, :warning, :error, :fatal].freeze

  attr_reader :level, :reason, :arguments
  attr_reader :location, :highlights

  ##
  # @param [Symbol] level
  # @param [Symbol] reason
  # @param [Hash] arguments
  # @param [Parser::Source::Range] location
  # @param [Array<Parser::Source::Range>] highlights
  #
  def initialize(level, reason, arguments, location, highlights=[])
    unless LEVELS.include?(level)
      raise ArgumentError,
            "Diagnostic#level must be one of #{LEVELS.join(', ')}; " \
            "#{level.inspect} provided."
    end
    raise 'Expected a location' unless location

    @level       = level
    @reason      = reason
    @arguments   = (arguments || {}).dup.freeze
    @location    = location
    @highlights  = highlights.dup.freeze

    freeze
  end

  ##
  # @return [String] the rendered message.
  #
  def message
    Messages.compile(@reason, @arguments)
  end

  ##
  # Renders the diagnostic message as a clang-like diagnostic.
  #
  # @example
  #  diagnostic.render # =>
  #  # [
  #  #   "(fragment:0):1:5: error: unexpected token $end",
  #  #   "foo +",
  #  #   "    ^"
  #  # ]
  #
  # @return [Array<String>]
  #
  def render
    if @location.line == @location.last_line || @location.is?("\n")
      ["#{@location}: #{@level}: #{message}"] + render_line(@location)
    else
      # multi-line diagnostic
      first_line = first_line_only(@location)
      last_line  = last_line_only(@location)
      num_lines  = (@location.last_line - @location.line) + 1
      buffer     = @location.source_buffer

      last_lineno, last_column = buffer.decompose_position(@location.end_pos)
      ["#{@location}-#{last_lineno}:#{last_column}: #{@level}: #{message}"] +
        render_line(first_line, num_lines > 2, false) +
        render_line(last_line, false, true)
    end
  end

  private

  ##
  # Renders one source line in clang diagnostic style, with highlights.
  #
  # @return [Array<String>]
  #
  def render_line(range, ellipsis=false, range_end=false)
    source_line    = range.source_line
    highlight_line = ' ' * source_line.length

    @highlights.each do |highlight|
     line_range = range.source_buffer.line_range(range.line)
      if highlight = highlight.intersect(line_range)
        highlight_line[highlight.column_range] = '~' * highlight.size
      end
    end

    if range.is?("\n")
      highlight_line += "^"
    else
      if !range_end && range.size >= 1
        highlight_line[range.column_range] = '^' + '~' * (range.size - 1)
      else
        highlight_line[range.column_range] = '~' * range.size
      end
    end

    highlight_line += '...' if ellipsis

    [source_line, highlight_line].
      map { |line| "#{range.source_buffer.name}:#{range.line}: #{line}" }
  end

  ##
  # If necessary, shrink a `Range` so as to include only the first line.
  #
  # @return [Parser::Source::Range]
  #
  def first_line_only(range)
    if range.line != range.last_line
      range.resize(range.source =~ /\n/)
    else
      range
    end
  end

  ##
  # If necessary, shrink a `Range` so as to include only the last line.
  #
  # @return [Parser::Source::Range]
  #
  def last_line_only(range)
    if range.line != range.last_line
      range.adjust(begin_pos: range.source =~ /[^\n]*\z/)
    else
      range
    end
  end
end

#level ⇒ Symbol (readonly)

Returns diagnostic level.

Returns:

  • (Symbol) —

    diagnostic level

See Also:



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# File 'lib/parser/diagnostic.rb', line 31

class Diagnostic
  ##
  # Collection of the available diagnostic levels.
  #
  # @return [Array]
  #
  LEVELS = [:note, :warning, :error, :fatal].freeze

  attr_reader :level, :reason, :arguments
  attr_reader :location, :highlights

  ##
  # @param [Symbol] level
  # @param [Symbol] reason
  # @param [Hash] arguments
  # @param [Parser::Source::Range] location
  # @param [Array<Parser::Source::Range>] highlights
  #
  def initialize(level, reason, arguments, location, highlights=[])
    unless LEVELS.include?(level)
      raise ArgumentError,
            "Diagnostic#level must be one of #{LEVELS.join(', ')}; " \
            "#{level.inspect} provided."
    end
    raise 'Expected a location' unless location

    @level       = level
    @reason      = reason
    @arguments   = (arguments || {}).dup.freeze
    @location    = location
    @highlights  = highlights.dup.freeze

    freeze
  end

  ##
  # @return [String] the rendered message.
  #
  def message
    Messages.compile(@reason, @arguments)
  end

  ##
  # Renders the diagnostic message as a clang-like diagnostic.
  #
  # @example
  #  diagnostic.render # =>
  #  # [
  #  #   "(fragment:0):1:5: error: unexpected token $end",
  #  #   "foo +",
  #  #   "    ^"
  #  # ]
  #
  # @return [Array<String>]
  #
  def render
    if @location.line == @location.last_line || @location.is?("\n")
      ["#{@location}: #{@level}: #{message}"] + render_line(@location)
    else
      # multi-line diagnostic
      first_line = first_line_only(@location)
      last_line  = last_line_only(@location)
      num_lines  = (@location.last_line - @location.line) + 1
      buffer     = @location.source_buffer

      last_lineno, last_column = buffer.decompose_position(@location.end_pos)
      ["#{@location}-#{last_lineno}:#{last_column}: #{@level}: #{message}"] +
        render_line(first_line, num_lines > 2, false) +
        render_line(last_line, false, true)
    end
  end

  private

  ##
  # Renders one source line in clang diagnostic style, with highlights.
  #
  # @return [Array<String>]
  #
  def render_line(range, ellipsis=false, range_end=false)
    source_line    = range.source_line
    highlight_line = ' ' * source_line.length

    @highlights.each do |highlight|
     line_range = range.source_buffer.line_range(range.line)
      if highlight = highlight.intersect(line_range)
        highlight_line[highlight.column_range] = '~' * highlight.size
      end
    end

    if range.is?("\n")
      highlight_line += "^"
    else
      if !range_end && range.size >= 1
        highlight_line[range.column_range] = '^' + '~' * (range.size - 1)
      else
        highlight_line[range.column_range] = '~' * range.size
      end
    end

    highlight_line += '...' if ellipsis

    [source_line, highlight_line].
      map { |line| "#{range.source_buffer.name}:#{range.line}: #{line}" }
  end

  ##
  # If necessary, shrink a `Range` so as to include only the first line.
  #
  # @return [Parser::Source::Range]
  #
  def first_line_only(range)
    if range.line != range.last_line
      range.resize(range.source =~ /\n/)
    else
      range
    end
  end

  ##
  # If necessary, shrink a `Range` so as to include only the last line.
  #
  # @return [Parser::Source::Range]
  #
  def last_line_only(range)
    if range.line != range.last_line
      range.adjust(begin_pos: range.source =~ /[^\n]*\z/)
    else
      range
    end
  end
end

#location ⇒ Parser::Source::Range (readonly)

Main error-related source range.

Returns:



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# File 'lib/parser/diagnostic.rb', line 31

class Diagnostic
  ##
  # Collection of the available diagnostic levels.
  #
  # @return [Array]
  #
  LEVELS = [:note, :warning, :error, :fatal].freeze

  attr_reader :level, :reason, :arguments
  attr_reader :location, :highlights

  ##
  # @param [Symbol] level
  # @param [Symbol] reason
  # @param [Hash] arguments
  # @param [Parser::Source::Range] location
  # @param [Array<Parser::Source::Range>] highlights
  #
  def initialize(level, reason, arguments, location, highlights=[])
    unless LEVELS.include?(level)
      raise ArgumentError,
            "Diagnostic#level must be one of #{LEVELS.join(', ')}; " \
            "#{level.inspect} provided."
    end
    raise 'Expected a location' unless location

    @level       = level
    @reason      = reason
    @arguments   = (arguments || {}).dup.freeze
    @location    = location
    @highlights  = highlights.dup.freeze

    freeze
  end

  ##
  # @return [String] the rendered message.
  #
  def message
    Messages.compile(@reason, @arguments)
  end

  ##
  # Renders the diagnostic message as a clang-like diagnostic.
  #
  # @example
  #  diagnostic.render # =>
  #  # [
  #  #   "(fragment:0):1:5: error: unexpected token $end",
  #  #   "foo +",
  #  #   "    ^"
  #  # ]
  #
  # @return [Array<String>]
  #
  def render
    if @location.line == @location.last_line || @location.is?("\n")
      ["#{@location}: #{@level}: #{message}"] + render_line(@location)
    else
      # multi-line diagnostic
      first_line = first_line_only(@location)
      last_line  = last_line_only(@location)
      num_lines  = (@location.last_line - @location.line) + 1
      buffer     = @location.source_buffer

      last_lineno, last_column = buffer.decompose_position(@location.end_pos)
      ["#{@location}-#{last_lineno}:#{last_column}: #{@level}: #{message}"] +
        render_line(first_line, num_lines > 2, false) +
        render_line(last_line, false, true)
    end
  end

  private

  ##
  # Renders one source line in clang diagnostic style, with highlights.
  #
  # @return [Array<String>]
  #
  def render_line(range, ellipsis=false, range_end=false)
    source_line    = range.source_line
    highlight_line = ' ' * source_line.length

    @highlights.each do |highlight|
     line_range = range.source_buffer.line_range(range.line)
      if highlight = highlight.intersect(line_range)
        highlight_line[highlight.column_range] = '~' * highlight.size
      end
    end

    if range.is?("\n")
      highlight_line += "^"
    else
      if !range_end && range.size >= 1
        highlight_line[range.column_range] = '^' + '~' * (range.size - 1)
      else
        highlight_line[range.column_range] = '~' * range.size
      end
    end

    highlight_line += '...' if ellipsis

    [source_line, highlight_line].
      map { |line| "#{range.source_buffer.name}:#{range.line}: #{line}" }
  end

  ##
  # If necessary, shrink a `Range` so as to include only the first line.
  #
  # @return [Parser::Source::Range]
  #
  def first_line_only(range)
    if range.line != range.last_line
      range.resize(range.source =~ /\n/)
    else
      range
    end
  end

  ##
  # If necessary, shrink a `Range` so as to include only the last line.
  #
  # @return [Parser::Source::Range]
  #
  def last_line_only(range)
    if range.line != range.last_line
      range.adjust(begin_pos: range.source =~ /[^\n]*\z/)
    else
      range
    end
  end
end

#message ⇒ String (readonly)

Returns the rendered message.

Returns:

  • (String) —

    the rendered message.



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# File 'lib/parser/diagnostic.rb', line 31

class Diagnostic
  ##
  # Collection of the available diagnostic levels.
  #
  # @return [Array]
  #
  LEVELS = [:note, :warning, :error, :fatal].freeze

  attr_reader :level, :reason, :arguments
  attr_reader :location, :highlights

  ##
  # @param [Symbol] level
  # @param [Symbol] reason
  # @param [Hash] arguments
  # @param [Parser::Source::Range] location
  # @param [Array<Parser::Source::Range>] highlights
  #
  def initialize(level, reason, arguments, location, highlights=[])
    unless LEVELS.include?(level)
      raise ArgumentError,
            "Diagnostic#level must be one of #{LEVELS.join(', ')}; " \
            "#{level.inspect} provided."
    end
    raise 'Expected a location' unless location

    @level       = level
    @reason      = reason
    @arguments   = (arguments || {}).dup.freeze
    @location    = location
    @highlights  = highlights.dup.freeze

    freeze
  end

  ##
  # @return [String] the rendered message.
  #
  def message
    Messages.compile(@reason, @arguments)
  end

  ##
  # Renders the diagnostic message as a clang-like diagnostic.
  #
  # @example
  #  diagnostic.render # =>
  #  # [
  #  #   "(fragment:0):1:5: error: unexpected token $end",
  #  #   "foo +",
  #  #   "    ^"
  #  # ]
  #
  # @return [Array<String>]
  #
  def render
    if @location.line == @location.last_line || @location.is?("\n")
      ["#{@location}: #{@level}: #{message}"] + render_line(@location)
    else
      # multi-line diagnostic
      first_line = first_line_only(@location)
      last_line  = last_line_only(@location)
      num_lines  = (@location.last_line - @location.line) + 1
      buffer     = @location.source_buffer

      last_lineno, last_column = buffer.decompose_position(@location.end_pos)
      ["#{@location}-#{last_lineno}:#{last_column}: #{@level}: #{message}"] +
        render_line(first_line, num_lines > 2, false) +
        render_line(last_line, false, true)
    end
  end

  private

  ##
  # Renders one source line in clang diagnostic style, with highlights.
  #
  # @return [Array<String>]
  #
  def render_line(range, ellipsis=false, range_end=false)
    source_line    = range.source_line
    highlight_line = ' ' * source_line.length

    @highlights.each do |highlight|
     line_range = range.source_buffer.line_range(range.line)
      if highlight = highlight.intersect(line_range)
        highlight_line[highlight.column_range] = '~' * highlight.size
      end
    end

    if range.is?("\n")
      highlight_line += "^"
    else
      if !range_end && range.size >= 1
        highlight_line[range.column_range] = '^' + '~' * (range.size - 1)
      else
        highlight_line[range.column_range] = '~' * range.size
      end
    end

    highlight_line += '...' if ellipsis

    [source_line, highlight_line].
      map { |line| "#{range.source_buffer.name}:#{range.line}: #{line}" }
  end

  ##
  # If necessary, shrink a `Range` so as to include only the first line.
  #
  # @return [Parser::Source::Range]
  #
  def first_line_only(range)
    if range.line != range.last_line
      range.resize(range.source =~ /\n/)
    else
      range
    end
  end

  ##
  # If necessary, shrink a `Range` so as to include only the last line.
  #
  # @return [Parser::Source::Range]
  #
  def last_line_only(range)
    if range.line != range.last_line
      range.adjust(begin_pos: range.source =~ /[^\n]*\z/)
    else
      range
    end
  end
end

#reason ⇒ Symbol (readonly)

Returns reason for error.

Returns:

  • (Symbol) —

    reason for error

See Also:



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# File 'lib/parser/diagnostic.rb', line 31

class Diagnostic
  ##
  # Collection of the available diagnostic levels.
  #
  # @return [Array]
  #
  LEVELS = [:note, :warning, :error, :fatal].freeze

  attr_reader :level, :reason, :arguments
  attr_reader :location, :highlights

  ##
  # @param [Symbol] level
  # @param [Symbol] reason
  # @param [Hash] arguments
  # @param [Parser::Source::Range] location
  # @param [Array<Parser::Source::Range>] highlights
  #
  def initialize(level, reason, arguments, location, highlights=[])
    unless LEVELS.include?(level)
      raise ArgumentError,
            "Diagnostic#level must be one of #{LEVELS.join(', ')}; " \
            "#{level.inspect} provided."
    end
    raise 'Expected a location' unless location

    @level       = level
    @reason      = reason
    @arguments   = (arguments || {}).dup.freeze
    @location    = location
    @highlights  = highlights.dup.freeze

    freeze
  end

  ##
  # @return [String] the rendered message.
  #
  def message
    Messages.compile(@reason, @arguments)
  end

  ##
  # Renders the diagnostic message as a clang-like diagnostic.
  #
  # @example
  #  diagnostic.render # =>
  #  # [
  #  #   "(fragment:0):1:5: error: unexpected token $end",
  #  #   "foo +",
  #  #   "    ^"
  #  # ]
  #
  # @return [Array<String>]
  #
  def render
    if @location.line == @location.last_line || @location.is?("\n")
      ["#{@location}: #{@level}: #{message}"] + render_line(@location)
    else
      # multi-line diagnostic
      first_line = first_line_only(@location)
      last_line  = last_line_only(@location)
      num_lines  = (@location.last_line - @location.line) + 1
      buffer     = @location.source_buffer

      last_lineno, last_column = buffer.decompose_position(@location.end_pos)
      ["#{@location}-#{last_lineno}:#{last_column}: #{@level}: #{message}"] +
        render_line(first_line, num_lines > 2, false) +
        render_line(last_line, false, true)
    end
  end

  private

  ##
  # Renders one source line in clang diagnostic style, with highlights.
  #
  # @return [Array<String>]
  #
  def render_line(range, ellipsis=false, range_end=false)
    source_line    = range.source_line
    highlight_line = ' ' * source_line.length

    @highlights.each do |highlight|
     line_range = range.source_buffer.line_range(range.line)
      if highlight = highlight.intersect(line_range)
        highlight_line[highlight.column_range] = '~' * highlight.size
      end
    end

    if range.is?("\n")
      highlight_line += "^"
    else
      if !range_end && range.size >= 1
        highlight_line[range.column_range] = '^' + '~' * (range.size - 1)
      else
        highlight_line[range.column_range] = '~' * range.size
      end
    end

    highlight_line += '...' if ellipsis

    [source_line, highlight_line].
      map { |line| "#{range.source_buffer.name}:#{range.line}: #{line}" }
  end

  ##
  # If necessary, shrink a `Range` so as to include only the first line.
  #
  # @return [Parser::Source::Range]
  #
  def first_line_only(range)
    if range.line != range.last_line
      range.resize(range.source =~ /\n/)
    else
      range
    end
  end

  ##
  # If necessary, shrink a `Range` so as to include only the last line.
  #
  # @return [Parser::Source::Range]
  #
  def last_line_only(range)
    if range.line != range.last_line
      range.adjust(begin_pos: range.source =~ /[^\n]*\z/)
    else
      range
    end
  end
end

Instance Method Details

#render ⇒ Array<String>

Renders the diagnostic message as a clang-like diagnostic.

Examples:

diagnostic.render # =>
# [
#   "(fragment:0):1:5: error: unexpected token $end",
#   "foo +",
#   "    ^"
# ]

Returns:

  • (Array<String>) 


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# File 'lib/parser/diagnostic.rb', line 86

def render
  if @location.line == @location.last_line || @location.is?("\n")
    ["#{@location}: #{@level}: #{message}"] + render_line(@location)
  else
    # multi-line diagnostic
    first_line = first_line_only(@location)
    last_line  = last_line_only(@location)
    num_lines  = (@location.last_line - @location.line) + 1
    buffer     = @location.source_buffer

    last_lineno, last_column = buffer.decompose_position(@location.end_pos)
    ["#{@location}-#{last_lineno}:#{last_column}: #{@level}: #{message}"] +
      render_line(first_line, num_lines > 2, false) +
      render_line(last_line, false, true)
  end
end